Police said officers train for these moments, but they never when they'll actually encounter them.

"The officers give the individual the opportunity tosurrender. (In the video) she tells him to put the gun down several times," said Maj. Don Woodruff. "These people are obviously -- by their behavior -- are very dangerous and need to be taken off the street as soon as possible."

If you have any information about the pair you are asked to call Duluth police at 770-476-4151.